1. 查看linux版本

cat /etc/issue
Ubuntu 11.04 \n \l

2. 查看内核版本

1)cat/proc/version
Linux version 2.6.38-13-generic(buildd@rothera) (gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)) #57-Ubuntu SMP Mon Mar 5 18:10:14 UTC 2012

2) uname命令

uname-a
Linux ubuntu 2.6.38-13-generic#57-Ubuntu SMP Mon Mar 5 18:10:14 UTC 2012 i686 i686 i386GNU/Linux

[-------------------------------------------------------------------------------
-a, --all print all information, inthe following order, 查看全部信息
except omit -p and -i ifunknown:
-s, --kernel-name print the kernelname 查看内核名字
-n, --nodename print the network nodehostname
-r, --kernel-release print the kernelrelease 查看内核发行版本
-v, --kernel-version print the kernelversion 查看内核版本
-m, --machine print the machinehardware name
-p, --processor print the processortype or "unknown"
-i, --hardware-platform print thehardware platform or "unknown"
-o, --operating-system print theoperating system 查看操作系统
--help display this help andexit
--version output version informationand exit

--------------------------------------------------------------------------------------]3.查看系统位数

1) getconfWORD_BIT
32

2)file/bin/bash
/bin/bash: ELF 32-bit LSB executable,Intel 80386, version 1 (SYSV), dynamically linked (uses sharedlibs), for GNU/Linux 2.6.15, stripped

4. 查看gcc版本

gcc--version
gcc (Ubuntu/Linaro 4.5.2-8ubuntu4)4.5.2

在linux下查看内核版本、gcc版本、操作系统多少位等参数